aFe BladeRunner Ported Ductile Iron Exhaust Manifolds - Jeep JK 07-11 3.8L

Bolt on instant performance by upgrading your restrictive factory manifold with this BladeRunner ported manifold. Designed to outflow the stock manifold by 12% for improved throttle response, this BladeRunner manifold has both the inlet and the outlet ports machined for a smooth transition and optimal flow path. Constructed from heavy walled, ductile iron to resist warping and cracking, this BladeRunner will outlast OE and factory replacement manifolds. Performance Gains:Outflows factory manifold by up to 12%. Machined Ports:These manifolds have both the inlet and the outlet ports machined for a smooth transition and optimal flow path for improved throttle response. Durable Ductile Iron:Heavy walled ductile iron material resists warping and cracking without compromising the integrity of gasket sealing. Hassle-Free Installation:This manifold bolts directly to the factory y-pipe for easy installation. Emissions Disclaimer:This product is not currently CARB exampt and is not available for